Elevator-lock.



No. 870,589. PATENTED NOV- 12, 1907. F. W. RUPPMAN. ELEVATOR LOOK.

APPLICATION FILED APB-13, 1906.

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No. 870,589. PATENTED ov. 1.2, 1907...

' F. w, RUPPMANQ ELEV ATOR LOCK.

APPLICATION FILED APR. 13, 1906.

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FRANK W. RUPPMAN, OF PHILADELPHIA, PENNSYLVANIA.

ELEVATOR-LOCK.

Specification of Letters Patent.

Patented Nov. 12, 1907'.

Application filed April 13, 1906- Serial NO. 311 521.

To all whom it may concern:

Be it known that I, FRANK W. RUPPMAN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Elevator-Locks, of which the following is a specification.

This invention relates to certain new and useful improvements in elevator locks.

The invention has for its object the production of simple and efficient means whereby the elevator conductor isprevented from operating his car when the door of the elevator shaft is open.

A further object is to provide means for securely locking the shaft doors against movement while the elevator car is in motion. 4 i

A further object is to provide a lock for an elevator door which can only be operated from inside the elevator shaft, and to provide said lock with means for automatically engaging the elevator operating mechanism to prevent operation of the same.

The invention will be hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawings:Figure l is a sectional view of an elevator car illustrating the operating lever for my improved lock. Fig. 2 is a sectional view on the line 2-2, Fig. 1. Fig. 3 is a front eleva tion of the lock with the face plate removed. Fig. 4 is a sectional view on the line 44, Fig. 3.

Referring to the drawing, 10 designates the elevator car which carries the usual controller shaft 11, the movement of the shaft being obtained through the medium of a lever 12, all of said parts being of any preferred construction. Secured to the shaft 11 is an arm or lever 13 which is provided at its free end with a roller 14 working in an angular slot 15 formed on theend of a slidingmember 16 which is slidingly supported by a depending bracket 17. If desired the sliding member 16 may be provided with rollers 18 resting upon a flange 19 of bracket 17, whereby friction is reduced. It will be noted that the slot 15 is of substantially V-shape. On the free end of the sliding mem ber 16 is formed an angle piece 20 which is engaged by a member of the lock on the shaft door, whereby the operator is prevented from moving the controller lever when the said door is opened.

The lock proper comprises a casing 21 secured to one side of the elevator well, and pivotally mounted in said casing is a horizontally movable retaining mem ber 22 provided with two arms 23, 24, arranged at an angle to each other, a spring 25 serving to hold the arm 24 normally against the face of the rear wall of the lock casing. The arm 23 is thus caused to project outward at an angle to the contiguous wall of the casing the extremity of said arm being provided with a depending portion 26 which normally lies in the path of movement of the overbalanced weighted portion 27 of a pivoted locking member 28, the latter member being provided with a depending finger 29. The eX- tremity of arm 24 is provided with a thickened. portion 30 which normally engages a lug 31 on a second locking member 32 pivotally mounted in casing 21 and provided with a lower approximately straight, finger 33 which is operated by gravity to automatically engage a slot or recess 34 in an arm 35 connected to a sliding door 36, to prevent the opening of said door. The locking members 28 and 32 are independent of the retaining member 22 and of each other,'

and the movement of each locking member is limited by suitable lugs 37.

In Figs. 3 and 4 the parts are illustrated in full lines in the positions they assume when the well door 36 of the elevator shaft is closed and the elevator is in transit. The dotted lines illustrate the positions assumed when said car has been brought to a stop and the door opened to permit passengers to enter or leave the car.

In practice the movement of lever 12 in either direction will rock arm or lever 13 up or down, according to the direction of movement of said lever, whereupon the roller 14 acting in one or the other of the branches of slot 15 will shift the member 16. When it is desired to stop the car the lever 12 is brought to a vertical position, whereupon the roller 14 is brought to the apex of the slot 15 and the arm or member 16 is moved forward. Before this movement terminates the angle piece 20 of member 16 is forced against the outwardly projecting portion 23 of retaining member 22, and moves said projecting portion back flush with the rear face of the casing 21 of the lock. This movement of member 22 causes the thickened portion 30 of the arm 24 to move out of engagement with the lug 31 of the locking member 32, whereupon the door may be moved in the direction indicated by the arrow, Fig. 3, the member 32 being free to swing on its pivot, back of arm 24, and allow the finger 33 to swing clear of recess or slot 34 as the door is opened. As the arm 35 moves away from the finger 29 of member 28, the support of the latter is withdrawn and as a consequence said member will move downwardly in front of the angle piece 20 by reason of the weighted portion 27 thereof being heavier than the lower portion. Said member 28 thus effectually prevents withdrawal of member 16.

Thus while the elevator door is open the conductor is prevented from operating his car and the lock is in such position that it cannot be tampered with. When it is desired to operate the car the door must first be closed, the effect of which is to cause the arm 35 to engage finger 29 and move the locking member 28 to its normal position, out of engagement with the angle piece 20 and the arm 23, which was also held in a locked position by said member 28, whereupon the spring 25 returns arm 24 to its normal position to engage the lug on the locking member 32, thus securely locking the door. The elevator can now be operated in either direction, as desired.

The advantages of my improved elevator lock will be at once apparent to those skilled in the art to which it appertains. It will be particularly noted that I have produced means for automatically locking the controller against movement just as soon as the door is opened, and this is true no matter how slightly the said door may be so opened. It will also be noted that I have provided means which will prevent the opening of the shaft door unless the elevator is in proper position relative to the floor. It will also be further observed that the lock proper must of necessity be located on the inside of the elevator shaft, where it cannot be reached from the outside without opening the door, and that the door can only be opened by operating the look from the inside of the car, thus being effectually guarded from surreptitious manipulation. Another advantage lies in the fact that'the stopping of the elevator itself automatically controls the lock to the door. It will also be noted that the parts are positively operated and will not be readily broken or deranged. It will also beobserved that while the controller mechanism illustrated and described is particularly adapted for use in connection with plunger elevators, I do not limit myself in this particular as the same may, with slight modification be applied to any form of elevator.

I claim as my inventionz- 1. An elevator lock comprising a gravity operated memher one end of which is constructed to engage a door, means for engaging the other end of said member to hold the same in locking position, and means for disengaging said locking member from said holding means.

2. An elevator lock comprising a gravity operated door locking member arranged to engage a door, and a pivoted member for normally preventing disengagement of said locking member, said pivoted member being provided with means adapted to be engaged by a controller member, whereby said pivoted member may be moved.

3. An elevator lock comprising a gravity operated door locking member arranged to engage a door, and a horizontally movable pivoted member for normally preventing disengagement of said locking member, said pivoted member being provided with means adapted to be engaged by a controller member, whereby the former may be moved.

-l. An elevator lock comprising a gravity operated door locking member arranged to engage a door, and a pivoted member having an arm normally-in engagement with said locking member to prevent disengagement thereof, said pivoted member being provided with means adapted to be engaged by a controller member, whereby the former may be moved.

5. An elevator lock comprising a gravity operated door locking member arranged to engage -a door, and a spring pressed pivoted member for normally preventing disengagement of said door locking member, said pivoted member being provided with means adapted to be engaged by a controller member, whereby the former may be moved.

(3. An elevator lock comprising an approximately straight pivoted member the lower end of which is adapted to. engage a door, and a pivoted retaining member engaging the upper end of said door locking member to normally and means for moving said retaining member in a direction opposed to its spring tension.

9. An elevator lock comprising an approximately straight pivoted member the lower end of which is adapted to engage a door, a pivotally supported angular retaining member, one arm of which normally engages the upper end of said door locking member, and means for engaging the other arm of said retaining member to disengage the latter from said locking member.

107 An elevator lock comprising a gravity operated door locking member, a retaining member for holding said locking member in locked position, and means adjacent said door locking member for locking the controller of an elevator.

11. An elevator lock comprising a gravity operated door locking member, a spring pressed retaining member for holding said locking member in locked position, and means adjacent said door locking member for locking the controller of an elevator.

12. An elevator lock comprising a pivoted door locking member, a pivoted retaining member supported independently of said locking member and normally engaging the same to hold it in locking position, and a controller locking member pivotally mounted adjacent the door locking member.

13. In an elevator lock the combination with a door provided with an arm having a notch therein, of a locking member engaging said notch, a pivoted retaining member supported independently of said locking member and nor mally engaging the latter to hold it from movement, and an overbalanced controller locking member held normally inoperative by the free end of said arm.

14. In an elevator lock the combination with a door provided with an arm having a notch therein, of a locking member to engage said notch, a pivoted retaining member to normally prevent movement of said locking member, and a pivoted controller locking member provided with an upper over-balance portion and a lower finger intercepting the path of movement of the free end of said arm.

15. An elevator lock comprising a door locking member, a pivoted retaining member for holding said door locking member in locking position, a controller locking member, and means operated by the controller for moving said retaining member out of: engagement with the door locking member.

16. In an elevator lock the combination with a door locking member, a pivoted retaining member supported independently of said door locking memberand normally engaging the latter to hold it in locking position, and a controller locking member, of a controller, and a slidable member connected thereto to move said retaining member in a direction to render said door locking member inoperative.

17. An elevator lock comprising a casing, a door locking member mounted therein, a controller locking member also mounted therein, and a retaining member for holding said door locking member normally in operative position, in combination with a controller shaft, an arm or lever mounted thereon, and a slidable member loosely connected to the free end of said arm and arranged to move said retaining member out of engagement with the door locking member.

18. An elevator lock comprising a casing, a door locking member mounted therein, a controller locking member also mounted in said casing, and a retaining member for holding said door locking member normally in operative position, in combination with a controller shaft, a slidable member for operating said retaining member and provided with an angular slot, and an arm secured to said controller shaft and having its free end connected to said an gnlar slot.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK IV. RUPPMAN.

Witnesses WM. ALBERT Woon, BENJ'. R. STEVENS. 

